Transmission-gearing.



W. K. BLACKBURN. TRANsmssIoN GEAR-ma. APPLIOATIQN FILED JULY 31,1908.

` 903,952.. Patented rm. 17,1908.

HTTOR WILLIAM K. BLACKBURN; OF MILWAUKEE, WISCONSIN TRANSMISSION- GEARING. l

No. v903,952

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application and my s1, 190s. serial no. 446,247.

T 0 all whom fit may concern:

Be it known that I, IVILLIAM K. BLACK- BURN, a citizen of the UnitedStates, and resident of Milwaukee. in the county of Milwa ltee and Stateof *Vv'isconsi'm have invented certain new and'useful Improvements inTrausmission-Gearings; and I' do hereby declare that 'the following is afull, clear, and exact description thereof.

My invention consistsvin certain4 peculiarities of construction andcombination of parts hereinafter set forth with reference to theaccompanying drawing and subsequently claimed, its object being toprovide simple, positive. and durable gearing, the arrangement andconstruction of which is such that motion in one direction from apower-shaft is quickly and positively transmitted to a couuter-slnift ineither direction, the gearing being iu constant mesh. y

The drawing represents a sectional plan view of avtransn'iission gearingembodying the features of my invention, the parts being shown inposition wherein the power-shaft gearing is uncoupled from the counter.

Referring by numeral to the drawing, l,

indicates a frame, in bearings of which is mounted a power-shaft 2, theshaft being provided with oppositely disposed conical clutch members 3that are secured to said shaft. Beveled pinions 4 are loosely mountedupon the shafthaving collared sleeve extensions 5, which extensions areheld against end-thrust by bearings of the frame located between thebeveled pinions and collared ends of their respective sleeves. Eachbevel pinion is provided with' a rearwardly extending conical shell 6into which is housed the clutch-members 3, said clutch-members beingarranged to be alternately forced into frictional engagement with theshells. En-

gagementof the clutch-members and shells is accomplished by means of alever 7 fulcrumed to the frame 1 and in Spanner-engagement with agrooved collar 8 fast on the power-shaft By this construction it isapparent that when 4the power-shaft is moved longitudinally in eitherdirection by Vthe lever, from the position shown in the drawing, one orthe other of the beveled pinion shells will be engaged by the adjacentclutch-member whereby a rotation of said pinions is effected. Meshingwith both bev-l ,clutch-members.

eled pinions 1 isa beveled gear-wheel 9, which gear-wheel is secured toa countershaft 10. this shaft being mounted in bearings of the frame andcarrying a toothed sprocket-wheel ll for transmitting motion by a chain(not shown) to a vehicle-axle or any mechanism desired to be actuated.

From the foregoing described gearing, it obvious that the power-shaftdriven in one direction. will cause'the counter-shaft to rotate ineither direction at the will of the operator. or said counter-shaft--may be disconnected from the power-shaft entirely, depending upon theposition of the clutchmembers. and when either pinion is operat ing todrive the aforesaidcounter-shaft, theopposite pinion is idly rotated ina reverse direction by the gear-wheel. thus serving as acouliter-balance. n

It should be understood that iu some instances. for the toothed beveledpinions and gear-wheel, friction-gems' may be substituted, but in eitherinstance the `reversing' mechanism is the-same, which mechanismcomprises the conical clutch-members and their conical shells or housingcarried. by the beveled pinions.

I claim: In transmission gearing, a' power shaft, conical clutch-memberssecured to the powershaft, oppositely disposed beveled faced pinionsloosely mounted upon said power-shaft and having conical shells extendinfrom Afor frictional engagement with said clutch-members, means forholding the bevelfaced pinions against end-play upon the aforesaidpower-shaft, a counter-shaft, a beveled-faced wheel carried by thecounter-shaft adapted to have constant engagement with both of theaforesaid ybevel-faced pinions, and means for impartinglongitudinalmotion to the power-shaft whereby the bevelfaced pinions are-alternatelyengaged by the In testimony thatI claim the foregoing I havehereunto setmy hand at Milwaukee, in thel county of Milwaukee vand State oflViscousin inthe presence of two witnesses.

WILLIAM K. BLACKBURN.

vWitnesses:

.Grenen FELBER, N. E. OLirHAN'r there-

